Canonical correspondence analysis-based soil nitrogen reserve estimation method

A soil, typical technology, applied in the field of soil property prediction

Active Publication Date: 2017-07-25
INST OF SOIL SCI CHINESE ACAD OF SCI
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a method for estimating soil nitrogen storage based on typical correspondence analysis, which c...

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  • Canonical correspondence analysis-based soil nitrogen reserve estimation method
  • Canonical correspondence analysis-based soil nitrogen reserve estimation method
  • Canonical correspondence analysis-based soil nitrogen reserve estimation method

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[0074] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0075] The method for estimating soil nitrogen storage based on typical correspondence analysis designed by the present invention belongs to the technical field of soil nitrogen storage estimation in oriented soil science and spatial analysis, and involves the calculation of soil nitrogen density of one meter of soil and the presentation of soil nitrogen density under different landscape characteristics The simulation of the spatial variation characteristics of the model can efficiently preprocess the information of independent variables through various dimensionality reduction techniques, and use typical correspondence analysis to analyze the comprehensive impact variables of nitrogen storage at different depths. Especially in the analysis of factors affecting soil properties of different properties and depths, a compreh...

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Abstract

The invention relates to a canonical correspondence analysis-based soil nitrogen reserve estimation method, and belongs to a pedometrics and spatial analysis-oriented soil nitrogen reserve estimation method. The calculation of soil nitrogen density of a one-meter soil body and the simulation of spatial variation characteristics of the soil nitrogen density under different landscape characteristics are involved; an independent variable can be subjected to effective information preprocessing through multiple dimension reduction technologies; a comprehensive influence variable of nitrogen reserves of different depths is analyzed by using canonical correspondence analysis; and especially in the aspect of analyzing attribute influence factors of soil with different properties and different depths, a comprehensive fitting relationship between multiple soil attributes and typical characteristics of environment variables is established.

Description

technical field [0001] The invention relates to a method for estimating soil nitrogen storage based on typical correspondence analysis, and belongs to the technical field of soil attribute prediction. Background technique [0002] 90% of the nitrogen in the soil is organic and 10% is inorganic. Inorganic nitrogen in soil mainly includes NO 3- , NO 2- , exchangeable NH 4+ , Non-exchangeable NH 4+ . Most of the organic nitrogen in the soil is combined with inorganic minerals. Soil nitrogen content is consistent with the change of soil organic matter content. Nitrogen is active in nature and can be exchanged between the atmosphere, soil and biological organisms. Estimation of regional soil nitrogen stocks is an important component of global climate change. Accurate estimation of regional nitrogen storage can effectively reduce the uncertainty in national-scale nitrogen cycle simulations. [0003] Traditional nitrogen storage estimation methods mainly include life zone ...

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 宋效东吴华勇刘峰元野张甘霖李德成杨金玲赵玉国
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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